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Thread: RAID Question...

  1. #1
    Headless Chicken Terbinator's Avatar
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    Question RAID Question...

    I'm looking to get another HDD and set up RAID 1 as i should really be more pro-active in safeguarding important data.

    However, I'm also in the hunt for another X-25V for <£50. So I'm looking at having the SSD's in RAID0 while having two HDD's (possibly F3's - may buy some F4's) in RAID1.

    But can that actually be done or does the controller (ICH10R) only support one level at a time ?

    If only one level is supported i could live without the striping, but then what would be the best option to go for backup wise, 1/5 ? I realise 5 would require more disks.
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
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    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

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    jim
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    Re: RAID Question...

    The intel controllers can support multiple levels on the same drives, let alone multiple drives. So yes, no reason why not.

    As for your last comment, you'll probably be shot down for implying that RAID = backup, but I'm sure you're well aware of the reasons why. RAID 1 requires more disks in the end, since it's just a 1:1 copy, and RAID 5 stores parity data. For the same reasons, RAID 1 is more reliable, but it uses up more disk space. On the basis that you've got a backup stores elsewhere, it's probably overkill, and RAID 5 would be fine.

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    Re: RAID Question...

    Two RAID arrays on ICHXXR shouldn't be a problem, performance might suck a bit with too many drives but its nothing you can do about it.

    I would suggest buying cheapo drive to back up your arrays to.

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    Re: RAID Question...

    The best strategy backup wise would be to mount your second drive in an external enclosure and keep it away from your computer except when you are taking a backup. RAID 1 will keep your data safe if a drive suddenly fails, but it will not protect you from accidental deletion, theft of your computer, fire etc.

    As to if your RAID controller supports running both RAID 1 and 0 a the same time, assuming that we are talking about software RAID, that would depend mostly on the RAID emulator in your OS, so if you are running windows, it depends on what features the RAID driver disc provides.

    If you are running Linux, then your kernel will just see lots of discs, and you can set them up with any sort of RAID you like.

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    Re: RAID Question...

    Quote Originally Posted by chrestomanci View Post

    As to if your RAID controller supports running both RAID 1 and 0 a the same time, assuming that we are talking about software RAID, that would depend mostly on the RAID emulator in your OS, so if you are running windows, it depends on what features the RAID driver disc provides.
    When i had a mess about with RAID last time it was a case of just switching to 'RAID' in the BIOS - IIRC no drivers were needed within Windows itself.

    What i may do then is still stick with the RAID1 plan but as suggested keep a spare drive on the shelf and just take a backup once a week or month, or whenever i deem it necessary.
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

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    Re: RAID Question...

    You can do RAID through Windows or through the BIOS, dependent on whether your motherboard supports it. BIOS is usually the way to go, if the option is there.

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    Re: RAID Question...

    If backup is the main thing that your after then i would write off RAID 5 on the motherbard. Main reason being if your motherboard is the thing that goes then you will lose the array and all the data. Best thing to do if you want a RAID5 is to use a dedicated card such as the PERC 5 or PERC 6, these can be found quite cheap on ebay (£60-100). If this is out of scope then stick to RAID 1.

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    Re: RAID Question...

    I probably will stick to RAID 1 with an external backup as well.

    Are any drives specifically good for RAID or should i just stick to the low power variants ?
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

  13. #9
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    Re: RAID Question...

    doesnt really matter as long as they are the same capacity. I think that if any drives are higher capacity than others in the array, they will be automatically limited to the lowest.

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    Re: RAID Question...

    Quote Originally Posted by Biscuit View Post
    I think that if any drives are higher capacity than others in the array, they will be automatically limited to the lowest.
    Correct for RAID 1/5.

  15. #11
    Does he need a reason? Funkstar's Avatar
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    Re: RAID Question...

    Quote Originally Posted by Biscuit View Post
    If backup is the main thing that your after then i would write off RAID 5 on the motherbard. Main reason being if your motherboard is the thing that goes then you will lose the array and all the data. Best thing to do if you want a RAID5 is to use a dedicated card such as the PERC 5 or PERC 6, these can be found quite cheap on ebay (£60-100). If this is out of scope then stick to RAID 1.
    PERC's are a lot more expensive than they used to be, especially once you add in the battery, cable and PCI back plate. The cables to the SATA drives can get expensive too.

    If you find a PERC 6/i for £60-100 let me know and I'll snap it up

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    Re: RAID Question...

    do you really NEED the battery though? Im running a card at the moment and i dont have one as from what i have read its only really needed incase you have a power cut it makes sure the data in the cache isnt lost.

    If this isnt the case and im gunna need it then let me know as i gotta get one asap ^^

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    Re: RAID Question...

    Correct, the battery only serves to keep the cache alive should the power fail. In normal operation it does nothing.
    Quote Originally Posted by Agent View Post
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    Re: RAID Question...

    However people have reported low performance without the battery, I think this is because the card changes how the cache is used.

    Had a look on ebay last night, and the H700 and H800 cards look pretty cool, although I'm still after a PERC 6/i to replace once of my PERC 5/i's. Combine that with a SAS Expander and (up to) 32 drives in RAID-6 here I come!

  19. #15
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    Re: RAID Question...

    My performance is more than enough for what i use it for. I dont really need the extra speed i am just using it as expandable storage with some redundancy.

    The arse on i had with changing over as you need an additional x amount of GB/TB storage for your existing stuff while you set up the array :/

    From the experience i would deifnately recomend it though, its a lovely tidy set up with regards to organisation.

  20. #16
    Headless Chicken Terbinator's Avatar
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    Re: RAID Question...

    Bah. My name didn't get pulled out of the hat for the cheapo X-25V. Looks like ym RAID'ing escapades will be limited too the mechanical disks for now
    Kalniel: "Nice review Tarinder - would it be possible to get a picture of the case when the components are installed (with the side off obviously)?"
    CAT-THE-FIFTH: "The Antec 300 is a case which has an understated and clean appearance which many people like. Not everyone is into e-peen looking computers which look like a cross between the imagination of a hyperactive 10 year old and a Frog."
    TKPeters: "Off to AVForum better Deal - £20+Vat for Free Shipping @ Scan"
    for all intents it seems to be the same card minus some gays name on it and a shielded cover ? with OEM added to it - GoNz0.

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